Diagnostic Trouble Code (DTC) Information BCM-0101

Condition

Fig 1: Identifying Brake Control Module (BCM) & Engine Control Module (ECM)

Courtesy of VOLVO CARS CORPORATION

NOTE: The diagnostic trouble code (DTC) applies only to cars with stability and traction control (STC) / dynamic stability and traction control (DSTC).

The engine control module (ECM) transmits a signal via the control area network (CAN) which indicates whether the engine speed signal or the torque signal to the brake control module (BCM) is correct or not. The brake control module (BCM) uses the engine speed (RPM) signal during control of the stability function.

The diagnostic trouble code (DTC) is stored if the brake control module (BCM) registers that the engine control module (ECM) has transmitted a signal indicating that the engine speed (RPM) signal is implausible.

The diagnostic trouble code (DTC) can be diagnosed after the engine has been started.

Substitute Value

Traction Control is blocked
Stability Control is blocked
Active yaw control is blocked.

HINT: BRAKE SYSTEM, ABBREVIATIONS

Possible Source

Fault in the engine management system.

NOTE: This diagnostic trouble code (DTC) is not due to an internal hardware fault in the Brake control module (BCM) and must not be remedied by replacing the control module.

Fault symptom[s]

The information lamp is lit
Traction control does not function
The stability control system does not function.